., the world's 7 billionth person will be born in india in october. that's exactitude for you. >> wow. >> and by 2050 earth's population will explode to more than 9 billion thanks to medical advances in developing countries. >>> and millions of americans who take extra strength tylenol are being told to cut back on their daily dosages. beginning this fall, johnson & johnson will direct users to take a maximum of only six pills a day instead of eight. the change is aimed at lowering the risk of accidental overdose and liver failure. >>> a surprise announcement from tiger woods, returning to competitive golf next week at the bridgestone invitational. woods had been sidelined for nearly three months after reinjuring his knee and achilles. last week, he sent a tweet saying, quote, feeling fit, end quote. >>> and finally, the news we have been waiting for, at least i have. happy feet is heading home. you remember him. >> yay. >> the world's favorite emperor penguin, certainly, took that wrong turn and ended up in new zealand, where it's considerably warmer